采用变流量技术降低混匀料粒度偏析

为提高原料的混匀效果，采用了变流量技术降低混匀料的粒度偏析，建立了逐层变流量堆料系统的数学模型，并在此基础上开发了控制系统。使用本系统后原料混匀效果明显改善，混匀料质量提高，烧结产量和质量指标有了明显改善。     

湘钢二烧混匀料场生产实践

介绍了湘钢二烧系统混匀料场及原料的情况，以及提高混匀料质量所采取的措施，和所取得的生产效果。并根据生产实践中存在的问题提出了改进意见。     

莱钢2×265m~2烧结混匀料高效生产实践

莱钢2×265m~2烧结混匀料生产通过对原料系统存取供优化、先进配料堆料工艺技术的应用、混匀料化学成分预测系统的应用,使265原料线混匀料日生产能力由15000t提高到了17000t,混匀料配料能力提高了13%,混匀料TFe±0.5、SiO_2±0.3合格率均稳定在85%以上,实现了混匀料高效生产的目标。     

影响烧结原料混匀效果的分析及对策

烧结原料混匀作业对稳定烧结生产、提高烧结矿质量具有重要意义,从堆料工艺、取料工艺、堆料层数、定量给料装置的精度、堆料机大车运行和带式输送机运行速度的匹配、一次料场的预混匀功能等方面分析了影响混匀效果的原因,给出了在混匀料场设计中消除这些影响、提高混匀效率的对应措施。     

提高原料混匀效果的对策

为了提高原料混匀效果，济钢原料厂对进厂原料存储进行科学管理，对混匀配料进行自动控制及自动取样，选择合理的堆料层数和先进的生产工艺，使得中和料质量有了明显提高，其主要成分指标TFe和SiO2一级品率分别由2000年的59．33％和58．44％提高到2003年的80．90％和86．25％。     

提高原料混匀效率的途径

提高原料混匀效率对冶金生产具有重要意义。本文从混匀作业的各方面分析了堆料层数、原料的物理特性、配料和堆料作业以及取料设备和端部料对混匀效率的影响,提出了消除这些影响,从而提高混匀效率的各种措施。     

水运一次料场粉矿堆料方式的实践

阐述了武钢工业港水运一次料场投产以来所采取的堆取料工艺生产实践，证明了不同的矿石原料采取相应的堆料方式，其预混匀效果可以得到明显的改善。     

提高混匀矿质量实践

针对邯钢原料来源比较杂、矿点多、含铁原料品质参差不齐、SiO2含量和TFe波动大,且粉矿粒度不均一的问题。通过细化配料管理,推行TFe、SiO2推移图以及采用分阶段变流量堆料工艺,降低了二次料场堆料粒度偏析、原料湿度不同对混匀矿质量的影响,提高了配料精度和原料混匀效果,为烧结生产提供了成分稳定的烧结混匀料。     

提高堆积混匀效果的研究及应用

介绍了济南钢铁(集团)总公司原料厂为提高烧结原料质量,通过DOE试验确定了堆料层数与中和料σTFe和σSiO2的量化关系,并根据实验结果对堆料机进行了改造.实验结果和改造后的效果表明,提高混匀堆料层数对提高混匀料成分稳定率有显著的效果.     

炼铁物料混匀技术研究进展

使用混匀原料有利于稳定高炉生产,能够获得高产、优质、低耗的技术经济指标,提高原料混匀效果已逐渐成为原料处理工艺的核心环节。从矿石成分对混匀效果的影响、一次料场作业、堆积层数的合理性、检测手段、品种代替、堆取料作业等工艺方面,结合先进的堆取料设备,细致地总结和探讨了国内外的研究进展,并对宝钢矿石混匀工艺作了针对性的点评和展望。     

Thermoelastic Stability of Layer Bonded to Half Plane

Sandwich and bimetallic plating significantly enhance many engineering applications within the civil engineering, marine engineering, and naval architecture fields due to its high strength-to-weight ratio. However, the design of sandwich plates requires an assessment of how they react to environments in which elevated temperatures are probable. A simple model, consisting of a layer bonded to a half plane, is used to predict the thermoelastic stability of such sandwich and bimetallic plating. It is found that the conduction of heat between the two dissimilar elastic bodies can cause thermoelastic instabilities within the system. The characteristic equation governing the thermoelastic stability of the layer bonded to a half plane exhibits instabilities dependent on the material properties of the layer and half plane. These instabilities are categorized, based on the ratio of the material properties, into three types.     

烧结原料混匀和制粒技术的研究

对传统的烧结原料中和混匀工艺和新开发的中和混匀工艺作了对比；对粒化物料的结构和粒度组成及粒化混合料特性对料层透气性的影响作了分析；介绍近年来国外新开发与应用的各种烧结原料混匀和制粒技术。     

线性回归方程式在检测煤胶质层中的应用

应用线性回归方程测量煤的胶质层最大厚度值与粘结指数值之间相关关系。根据实际数据判断两者的强相关性,求得线性方程,用显著性方法检验了线性方程的成立。通过对线性回归方程的标准误差的概率值,证明胶质层最大厚度估算值具有较强的准确性。该方程可应用与煤胶质层测定过程,以及炼焦工艺快速配煤Y值的估算与异常Y值的辨别中。     

不定型耐火材料在精炼钢包永久层上的应用

介绍了安钢第一炼轧厂100 t精炼钢包永久层耐火材料的材质选择及砌筑优化工艺,总结出一套适合该厂生产特点的钢包永久层整体打结工艺,采用无模具自流料打结钢包永久层,取得了良好的生产使用效果,提高了钢包永久层及钢包整体寿命,降低了耐火材料消耗,减少了穿包事故次数。     

Effect of Coarse Surface Layer on Bed-Load Transport

Existing bed-load transport formulas may overestimate the transport rate in mountain rivers by two orders of magnitude or more. Recently published field data sets provide an opportunity to take a fresh look at the bed-load transport relationship and it is hypothesized that the overestimate is due to a failure to account for the effect of a coarse surface layer of bed material inhibiting the release of fine subsurface material. Bed-load transport is determined as gs = aρ(q?qc) where q=water discharge per unit width; qc=critical value for initiation of bed material movement; ρ=water density; and a=coefficient. The gs/q relationship is typically piecewise linear, characterized by two transport phases with, respectively, low and high rates of change. Twenty-one flume and 25 field data sets were used to quantify the relationship for Phase 2. The flume data confirm the dependence of a on S1.5, where S=channel slope, in agreement with earlier studies. The field data additionally show that a varies inversely with the degree of bed armoring, given by the ratio of surface to subsurface bed material size. The finding is consistent with the hypothesis and suggests the need to account for the bed material supply limitation in the bed-load transport formula. However, the available data are not entirely sufficient to rule out an alternative dependency, or codependency, on flow resistance. The critical conditions for initiation of Phase 2 transport are also quantified as a function of bed material size and channel slope. The resulting set of equations allows a more accurate estimation of Phase 2 bed-load transport rates. However, the equations are empirical and should be restricted for use within the range of conditions used in their development, to determine mean rather than instantaneous transport rates and to determine bulk transport rates, not transport by size fraction.     

论节能降耗型烧结工序的设计要点及发展趋势

介绍了节能降耗烧结工序的设计要点,包括烧结原料预混匀、混合制粒机雾化喷头自控加水、超厚料层烧结、高效节能点火、新型环冷机改造及环保型立式棒条筛的应用等。通过新技术、新设备的应用,全面实现烧结工序的节能降耗。     

试谈配料方案与质量预测的优化

主要探讨了以理论推算为主，根据物料成分建立不同配比方案，再以实践累积经验为辅组建系统配料方案。此系统方案的建立，克服了烧结原料品种变换频繁带来的质量波动，稳定了混匀料和烧结矿的化学成分。     

屋面防水保护层轻质、工业化生产

在现在在建工程中,大多数防水保护层主要还是采取湿作业的细石砼保护层。对降低屋面温度、降低温差引起的结构变形不利,使用过程中的维修带来很大麻烦,施工速度慢,在季节性施工条件下,还会带来质量隐患而且不经济。在科学技术大发展的今天,随着施工技术和材料科学的进步,如果采取轻质、高强成品材料屋面板,既可以达到保护防水层的目的,又可以解决湿作业施工带来的维修、质量隐患方面的问题。本文就是通过轻质板使用的利与弊的讨论,从而使屋面防水保护层轻质、板块化得以推广。